Speed indicator



FIG. 1 is a top, front and right side perspective view of a speed indicator showing my new design, the dotted line of a partially shown spraying instrument is for illustrative purposes only and forms no part of the claimed design;

FIG. 2 is a right side elevational view;

FIG. 3 is a rear elevational view; and

FIG. 4 is a front elevational view thereof. 

The ornamental design for a speed indicator, as shown and described. 